Applied Statistics and Probability for Engineers, 6th Edition

$0$ to $100$
If the raw material is entirely made of moisture, then the maximum percentage of moisture is $100%$, or $100$ percentage points. If there is no moisture in the raw material, then the percentage of moisture is $0%$, or $0$ percentage points. Any integer value of percentage point falls within this range, so the range is $0$ to $100$.